Tread portion of an automobile tire



FIG. 1 is a perspective view of a tread portion of an automobile tireaccording to my design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a fragmentary enlarged front view showing the details of thetread portion thereof; and,

FIG. 7 is a section view taken along line 7-7 in FIG. 6.

Broken lines in the drawing figures are used to show portions of thetire that are not being claimed, and thus form no part of the claimeddesign.

CLAIM The ornamental design for a tread portion of an automobile tire,as shown and described.